Sveba-Dahlen InF6

What does Sveba-Dahlen InF6 mean?

The SD-180's Schneider frequency converter has detected that an option card or module installed in the drive is not recognised by the converter's firmware. The drive cannot identify or communicate with the fitted option, preventing normal operation. This fault typically occurs after installation of a non-approved or incompatible option module.

Symptoms

• InF6 fault code displayed on the SD-180 touchscreen at power-up
• Converter fails to initialise and will not accept a run command
• Fault appears immediately after an option card or module has been installed or changed
• No drive output to the motor regardless of control input state
• Other converter parameters may be inaccessible until the fault is cleared

Common causes

• An unrecognised or incompatible option card installed in the Schneider converter option slot
• Option module firmware version not supported by the installed converter firmware
• Option card from a different Schneider drive family fitted in error
• Physically damaged option card connector causing misidentification
• Option card not fully seated in its slot, causing partial or no recognition

Diagnostic steps

1. 01

   Isolate and lock out the SD-180

   Switch off at the main isolator and apply lockout/tagout. Wait a minimum of 5 minutes for the converter DC bus to discharge before opening the enclosure.

2. 02

   Identify the installed option

   Locate the option card or module installed in the Schneider converter and record its part number and revision. Cross-reference this against the approved options list in the SD-180 service manual to confirm whether it is a supported module.

3. 03

   Remove or replace the unrecognised option

   If the option is confirmed incompatible or unrecognised, remove it from the converter slot. If an option is required, fit only the approved replacement module specified in the Sveba-Dahlen SD-180 documentation.

4. 04

   Re-seat any retained option card

   If the option card is approved but was not fully seated, remove it completely, inspect the connector for damage or contamination, and re-seat it firmly in the correct slot before restoring power.

5. 05

   Power up and verify fault clearance

   Restore power to the SD-180 and check the touchscreen for clearance of InF6. If the fault clears, verify full converter operation through a complete test cycle before returning the oven to service.

When to call a professional

Escalate to an authorised Sveba-Dahlen or Schneider drive technician if you cannot identify the installed option, if no approved replacement is available, or if InF6 persists after fitting a confirmed compatible module. Selecting or configuring option cards incorrectly in the frequency converter can compromise oven safety and motor control.